The Non-Parametric Test That Requires at Least Ordinal Level Data

Multiple Choice

The non-parametric test that requires at least ordinal level data and that examines the entire distribution of a variable within two samples (and identifies the point at which the two samples differ the most) is:

A) Mann-Whitney U
B) Kolmogorov-Smirnov
C) Kruskal-Wallis
D) Wilcoxon sign